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25 April 2024

» pubmed » pmid12097125

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Room-temperature ferromagnetism in (Zn1-xMnx)GeP2 semiconductors
Sunglae Cho ; Sungyoul Choi ; Gi-Beom Cha ; Soon Cheol Hong ; Yunki Kim ; Yu-Jun Zhao ; Arthur J Freeman ; John B Ketterson ; B J Kim ; Y C Kim ; Byung-Chun Choi ;
Date:	24 Jun 2002
Journal:	Phys Rev Lett, 88 (25 Pt 1), 257203
Abstract:	We report on the discovery of a room-temperature ferromagnetic semiconductor in chalcopyrite (Zn1-xMnx)GeP2 with Tc = 312 K. We have also observed that, at temperatures below 47 K, samples for x = 0.056 and 0.2 show a transition to the antiferromagnetic (AFM) state, so that ferromagnetism is well defined to be present between 47 and 312 K. The observation that the AFM phase is most stable at low temperatures is consistent with the predictions of full-potential linearized augmented plane wave total energy calculations and has consequences for other chalcopyrite materials.
Source:	PubMed, pmid12097125
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